The refillable tank inkjet printers are a game-changer when it comes to ink cost per page. For example, for the EPSON EcoTank printers, you get 127ml of black ink for $25, while a HP61 cartridge only contains 4ml for $28
(based on current Amazon pricing). The EPSON ink is even more cost effective than laser printer toner. Here is a recent comparison of cost effective home printers by highly respected
RTINGS.com.
Comparing two well reviewed models, the cost per printed page for an EPSON EcoTank printer is ~10% of a Brother Laser printer.
Black-Only Printing Cost
EPSON ET-3950: 0.004 US$/print
Brother MFC-L8905CDW: 0.028 US$/print
Color Printing Cost
EPSON ET-3950: 0.014 US$/print
Brother MFC-L8905CDW: 0.151 US$/print